Multiplex telesig.



I V Patented July 22, I902.

W. S. BURNETT & W. H. GOODAL L.

MULTIPLEX TELESIG.

Application filed Apr. 6, 1900.;

(mi Model.) 7 ssheets-snm l.

4 M I l l l lll l lgl l l l=1 Patented July 22, 1902. w. s. BURNETII& w. H. 'GOODALL.

MULTIPLEX- TELESIG.

(Application filed Apr. 6, 1900.) v(llollodel.)

3 Sheets -Sheet 2.

'No. 705,5. I Patented July 22, I902. A w. s. BURNETT & w. H. GOODALLi =MULTIPLEX TELESIG. (Application filgd Apr. 0, 1900. (No Model.) s Sheets-Sheet s.

fwIt'L A'n BUR TT {its llILTJAM.

Z a, Whom, it mag/concern.- I

, kuown that we, WILLIAM ,S. BUR

zens of-ihe'United States, and residents of Milwaukee, county-oi Milwaukee, and State of Wisconsin, have invented new and useful Improvements inll/Iultiplex-Teiesigs, of which tlle following is aspecification.

Our invention'relatestoimprovements in -l.'o electrical station-individualizing devices, and

pertains especially to-a device,forindividualizingthe various stations on an elefitric sig- ,jnaling-circuit, which for the sake of -,brevity "we havetenmeda multiplex-telesig.

. 151'- The object of our invention isto provide.

means-whereby an operator atone station, usually (buthot necessarilyla ceutralsta- .tion, may individualize any one of the other; stationson a single or double electrical cirzo cuit and signal or transmit messages. to-that .kstation independently of th'e other. v .Inthe following description,,reference is had to theaccompanyingdrawings,inwhichf; Figure l is aside view of theapparatus used at the local stations (hereinafter; termed Ethel key mechanism) with a diagrammatic 5 illustrati'on of alight and signal-bell used in connection therewithand alsoof the central- -';=:oflic'e batteries and switch-lever. Fig. 215a top'viewof, the key mechanism. Fig. 3 isa 4; View of the same'from the opposite sidefroin thatshown in F,ig."l.i Fig; 4.- isan enlarged 'verticalasectional View of thecarrier. Fig. 5 "is a 'detailshowing mechanical means ,for drivingmihe carrier in which the key-actuatgpins are mounted. Fig. 6 is a top view,

partly in horizontal section, of the'keyguide- Kg's'. 7 and 8 are details illustratingmodified forms 'of the switch-key. Fig; 9 isa'diagr-an 1-- atic view of ourinvention, especially illus Siting theelectrica'lconnections; I 1 p ikeparts are identified-by thezsame ref-v ern'c'e-figures throughout the several views gehera tors,fit eroffth'e- ,messageeotytymg'that ts, r keyap ef ra sq' su'itable for-e i provided v ey Qan e ectri'cti-rrent-and 1th a den grate-rhamlet 2 an d Wiscons n; j

WILLIAM HERBERT GOODALL, citi- HERBERT eo'oDA LL, oE MILWAUKEE,

f JTMULLTII5LEVX.TEL'E'SIG.

. SPECIFICATION forming part of Letters mat No. 705,511, datedJuly 22, 190 2.

' V g A pl cation filedApiil '6'. 19oo; Serial nt-11,791. (No model.)

rib or flange .3. Oneiedge of the key is provided with a series of notches t of different -dimensions. The key ishung in a suitable frame5 by means of a pin 6, whichengages in the slot 2, and a bracket 7 is provided with spring-actuatedstuds S, which impinge on opposite sides of. the key, Fig. 6, and normally in the rear of 'the rib 3, the arrangement being such that the key is held by the bracket'in an angular position free to move longitudinally into and out of contact with an electrode 10, supported by but insulated from the frame and preferably formed of springmetal. The other pole of the circuit or circuits to which the electrode 10 belongs is connectedwith'the frame 5, as at 11 in Fig. l and it is therefore obvious that the key. is adapted toclose such circuits when brought into contact with'the electrode 10. I

The key-is actuated by means of a series of pins 15, movably mounted in a carrier 16, which preferably consists in a rotary disk supported in suitable hearings in the frame 5. Inthe construction shown the pins are inserted transversely through an annular series of holes in the disk and are adapted when pushed outwardly on the side of the disk occupied by the key to engage in the notches 4 of the latter if in registry with such notches. Normally, however, the pins are all pushed inwardly on that side of; the disk occupied bythe key, out of the path of the latter, this beingaccomplished by-providing a guide 17, against which the pins impinge when the disk is rotated, andare thereby: crowded inwardly in succession on that side after having been pushed out.

The disk maybe rotated by any suitable means for applying power. :In the drawings, Fig. 5; we'have showna weight 18 connected .with a chain 1-9'and adapted tocomm'unicate motion to the disk 16 through a sprocket-pulley 20 and disk supporting shaft 21, the chain 'being wou-ndnp' at intervals to raise the 5 T weighjt in ithe 'ca'stoxuary manner for weightactuated mechanisms; :It is obviohsyhowever, that any oth'er ureans for actuating the i carrier-may lee-substituted for the weight, as

"\desired. I

I The disk 16 is provided with th reeratchetrings 23,-245,'and -25*ou its periphery." The ring 24 is secured to or formed integrally with the disk, while the rings 23 and 25 are capable of an independent annular movement,

limited by stops 26, which engage in recesses 28 and 29 in the respective rings. It will be observed that the recesses 28 in the ring 23 correspond in length with two of the teeth of the ratchet, while the recesses 29 in the ring 25 correspond in length with three teeth of the ratchet. Both of the rings 23 and 25 are connected with the disk 16 by spring-tension connections 30, adapted to draw the rings forwardly in the direction of the movement of the disk, so that the stops 26 are normallyin contact with the rear ends of the recesses 28 and 29 of the respective disks.

31 is a hooked-shaped disk-holding pawl adapted to engage the teeth of the ratchet 24, and thus hold the disk 16 from rotating with the force exerted by the disk-actuating mechanism. This pawl is provided with an\up- \vardly-projecting arm 32, connected with the frame by a spring 33 and provided with a cross-bar 34. This spring 33 holds the pawl normally in engag ment with the ratchet 24.

35 and 36 are op; -sitely -projecting ring- .holding pawls adapted to engage the teeth of the ratchets 23 and 25, respectively, to hold the ratchets from rotating. These pawls are provided with upwardly-extending arms 37, connected with the frame by springs 38, which are adapted-to hold the pawls normally out of engagement with their respective ratchets. The arms 37 are disposed with'reference to the cross-bar 34 so that as either of the pawls 35 or 36 moves into engagement with its respective ratchet the arm 37 of the engaging pawl will'l mpinge against the bar 34 and lift the pawl 3lont of its engagement with-the ratchet 24, when the disk 16 will be permitted to revolve until one of the stops 26 engages against the opposite end of the recess in that ratchet-ring which is engaged by one of the ring-holding pawls, when the disk will also be held by the ring until the ring-holding pawl is released. As soon as this pawl is released, however, the pawl 31 again engages the disk-ratchet 24 and the ring is drawn forwardly by its spring connection 30 to its normal position with reference to the disk. It will therefore be understood that if the pawl 35 be actuated into engagement with the ratchet-ring 23the disk will be advanced a distance equal to the length of the recess 28 therein, or of two of the ratchet-teeth, while if the pawl 36 be actuated into engagement with the ratchet-ring 25 the disk will-be advanced a distance equal to the length of the recess 29 therein, or three ratchet-teeth, in the construction shown in the drawings.

For actuating the pawls we have provided electroinagnets 40 and 41, arranged to actuate armatures 42 and 43, secured to the arms 37 of the ring-holding pawls 35 and 36, respectively. By energizing the magnet 40 the armature 42 is actuated to move the. pawl35 into engagement with the ratchet-ring 23 and lift the pawl 31 out of engagement with the I disk-ratchet 24, thus permitting the disk to advance two notches, as heretofore explained.

By energizing the magnet 41 the armature 43 is actuated to move the pawl 36 into ongagement with the ratchet-ring and also lift the pawl 31 and permit the advancement of the disk three notches. By energizing the respective magnets alternately or successively with a varied number of impulses itis obvious thata substantially unlimited 'diffen entiation in the movement of the pin-supportproviding means for operating the key-actuating pins in concurrence with the movement of the disk it is also obvious that such pins may be actuated in various combinations to fit a great variety of keys, each of which may be actuated independently, the movement of each key being dependent upon its formation with notches in which the actuated pins will register.

To actuate the pins 15, we have provided electromagnets 45 and 46, the armatnres 47 and 48 of which are connected with pin-adjusting levers 44 and 49, respectively. The lever 44 is arranged to move independently and is adapted when moved in one direction to push one of the pins 15 into a position to engage the key 1. The lever 49 is similarly formed, but is provided with an arm 50, which is also adapted to engage and actuate the lever 44, whereby as the lever 49 is actuated two of the pins 15 will be adjusted in a position to engage the key by the cooperative movement of the two levers. The pins are adjusted at a point below the key and the continued movement of the disk 16 brings them into contact therewith. Whenever the pins register with the notches 4 of the key the movement of the disk will cause them to ing carrier or disk 16 can be secured, and by.

enter such notches and lift the key; but as soon as one of the pins fails to so register it will push the key backwardly until the rib 3 passes the studs 8, when the key will drop free of the pins to its lowest position, the key swinging forwardly by gravity to its original position as soon as the upper end of the rib 3 is in a position to pass under the studsS- will be skipped with each successive stroke of the pin-actuating lovers. The notches of all the keys are of twokinds only, formed to receive either one or two pins, and as the key of each instrument is provided with a different set or combinationot these one-pin and two-pin notches it is obvious that none of the keys will reach the electrode 10 except 7 that key in which the notches are adapted to register with the pins which are actuated.

The elcctromagnets 41 and 40 are included Q in the circuit of the-line and may operated either with a'double circuit, one for The electromagnets an independentlocal battery 55, having one pole connected in "parallel through the electromagn-ets45 and 46, conductors 57 and 58,

r brushes 59..and- 60-, and conductors 61 and 62 .to the electrodes 63 and. 64, respectively located in=the=stops 26 for the ratchet-rings 23,

and..25.. With this construction it will be observed that when either of the pawls or 36 tisactuate'd to hold its respective ring and release :the ratchet 24 and disk 16 the latter will move forwardly until the ring held by 2c thepa'wlengagesthe stop 26,'whena'. contact Eis formed-.ibetween the electrode in such stop and the ring and the circuit of the battery 55 closed through the pin --actuating electromagnet which is in electrical connection 25 with su,ch.electro de,the magnet being thereby energized and the pin-actuating levers set in motion. through its respective armature. In the construction shown the electrom-agnet 45 is'ini electrical communication with the elec-- 3otrode 63,which is located in the stop 26 of the ring-"23,. while therlelectromagnet 46 is similarlylinz electrical communication with the electrode 64, located in thestop 26 ,of the ,ring 25. It is therefore evident that .the

5- paw'hactuat-ingelectromagnet 40 and the pinactuating"electromagnet will act concurre'ntly through the medium of the ratchetring 23', while the magnets 41 and 46 will also act concurrently through the medium of the 40 ring 25. Themagnets 45 and 46 are thusenergized s cessively or in alternation to actuate pins 45in correspondence with the particular combinationof long and short notches 'ofthe key; pertaining to the desired station;

45 when the'key w-ill have been elevated by the pins" into contact with the electrodelO' and the. signaling-circuitclosed, as heretofore 6X1 plainedye'ither for the purpose of sounding an. alarm, sending'mes'sages, or both; As the 50 keys of all other-stations have a different series-of'notches', it is evident that the actu-. ate'd pins must fail to register at some point in the series,and when failing to so register the key'wili be forced backwardlyand;

, In the drawings we haveshown diagrammat- "ically the central-office batteries 70 and 71* andaswitc'h 72 asfused for a double circuitfor operating the magnets 40 and*41.' We have -also *shown'a light 73"and signaling bell 74 included in'the circuit of the electrode 10;

b'ut'it will be-understood that various instru-v 'me'nts 'm'ay'beincluded in such circuits and the connections made in a varietyiof ways to "su'i-t' the-requirements of the system to'which' the inven't-ion'is applied. 1 A r Reviewing the operation of our invention and assuming that the light 73anr1 signalingbell 74 are to becontrolled thereby-,it'will be observed that the particular-station shown in the drawings, is, provided-with a series of notches which, read from. they .top ofthe key downwardly, consists in a combination of-two long, one short, two 'long, and two short notches. To operate this key, therefore, the operator at the central station will move the switch-lever to form two successive contacts with the electrode 76,, then one contact with the electrode 75, then two at 76, --followedby two more at 75. For all contacts at 76 the circuit of the battery 71 will' be .closed and the magnet .41 energized, with a resulting three-notch movement of the carrieror disk 16, which closes the circuit of the local battery 55 through the medium of the ring 25 contacting with the electrode-,6 4, and thus energizes the electromagnet 46and the levers 49 and 44, whereby two of thepins. 15 are pushed into the path of the key. The teeth between the notches in the key correspond in width to the space occupied by one'pin on the disk, which pin is skipped by the levers, owing to thefact that the movement of the,

disk is equal to thespace occupied by three pins or ratchet-notches, while the levers actuate but two of the pins. The two pins first actuated are adapted to register with the f rst notch on the key, and the continnedmove' ment of the disk carries the pins into such registry and lifts the key-accordingly. The next two pins which are actuated will register with the next notch on thekey and continue to elevate the latter.. -For all contacts at 75 the circuit of the battery will be closed and the magnet 40 energized, when the, disk will move forwardly two-notches. The ring 23 will contact with electrode 63, closing thecircuit of local battery 55 through the magnet 23 and actuating lever44 to adjust a single pin 15 in a position to registerwith thethird notch on the key, which is short and adapted to receive buta single pin. When the entire combination has been sprung, the .key willhave been lifted into contact'with the electrode 10, closing the-local signaling-circuit, which includes the light, and signal-bell, as illustrated. Assuming, however, that a single pin should be adjusted Where two are re quired, it is obvious that. the key. wouidnot be lifted the necessary. distance to, provide for the registry of the pin next adjusted. On the other hand,.if two pinsare adj ustedwhere the key-notch will receive but oneoneof the pins willi npingeon an intervening tooth.

'In either case the keyv'ill-be pushed.backwardl'yr by the: non-registeri ng-,-pin and. will fall to its original position, as'heretofore explained. Asthe electrode 10 is elastic, the key :in contact therewith may beeasily discharged to-its original position lay-adjusting either dOUblOzOl single pins. ,i

.All the .keys should be uniformly provided with an initial notch of the same character-- '5. 2., it should be either single or double so that by continuously adjusting the pins to register with notches of the opposite character all keys on the circuit may be adjusted to the initial position.

,It will be understood that where our invention is applied to an'annunciator system such as isnsed in hotels, &c., all the instruments may be connected in series on a single line with shunts for operating the key-actuating devices and signaling-bells. In telephoneservice a number of instruments maybe connected in series on a multiple party-line, rendaringthe same as private for each individual as a single party-line would be. For telegraphic and alarm circuits, also, each station may be individualized at pleasure and independent communication had therewith. For

' trical stations, the combination of a circuitcloser at each station having individual characteristics; a carrier located at each station -and provided with a seriesof elements adapted to be adjusted in accordance with the individual characteristics of the circuit-closer at such station; an electromagnetic device controlling the movement of the carrier; and means for definitely limiting the length of the I carrier movement for any one electrical impulse.

2. In a circuit-closing mechanism for-electrical stations, a carrier at each station provided with ditferentiatin g elements; a plurality of devices for mechanically limiting the movement of the carrier; and electromagnetic means for independently operating said devices, whereby the movement of the carrier may be divided intofixed differential distances of either equal, or unequal length.

3. In a circuit-closing mechanism for electrical stations, a carrier at each station provided with differentiating elements; and electrically controlled mechanism for holding said carrier and permitting its movement at fixed distances of equal, or unequal length,

' ..according to the will of the operator.

4. In a circuit-closing mechanism for elec-,-

trical stations,v a carrier'at, each station provided with difierentiating elements; means for driving the carrier; stopping devices adapted to move with the carrier, but capable, respectively, of differently-limited independent inovement; and electrically-con-= 'mtrolled mechanism for alternately engaging the carrier, and anyoneor more of the stopv ping'device s,at the selection of the operator.

. 5. In a circuit-closing mechanism for electrical statigns, a carrier at each station providedwith differentiating elements; means for driving the carrier; stopping devices adapted to move with the carrier, but capable, respectively, of differently-limited independent movement; means for restoring the stopping devices to their original position after such independent movement; and electrically-controlled mechanism for alternately engaging the carrier and any one or more of the stopping devices, at the selection of the operator.

6. In a circuit-closing mechanism for electrical stations, a carrier at each station provided with difierentiating elements; electrically-controlled mechanism for holding said carrier and permitting its movement at fixed distances of equal, or unequal length, according to the willof the operator; and similarly-- controlled mechanism arranged to operate concurrently with the holding mechanism for adjusting the differentiating elements in position for contact with the circuit-closer.

7. Inan electrical circuit connected with a plurality of stations, the combination of circuit-closing keys for the stations, having characteristics dilferent from the keys of other stations; carriers provided with a series of key-actuating elements; electromagnets controlling the movement 0t said carriers; and electromagnetic means for adjusting said elements in any carrier to fit the individual characteristics of its respective key.

8. In an electrical circuit connected with a plurality of stations, the combination of a circuit closing key for each station, having characteristics diiferent from the keys of other stations; a carrier provided with a multiple series of key-actuating elements; electromagnets controlling the movement of said carrier; and electromagnetic means for adjusting said elements to fit the individual characteristics of any one ofsaid keys; together with means for actuating the carrier and the key-actuating elements.

9. In an electrical circuit connected with a plurality of stations, the combination of keys for the stations, each having characteristics diflerent from the keys of other stations; keyactuating devices at the stations, adapted to be adjusted to the individual characteristics of one of the keys; means for actuating said devices; and electromagnetic means for ad justing the key-actuating devices, said devices being ineffective to move a key into operative position except when adjusted to the individual characteristics of such key.

10. In an electrical circuit connected with a plurality of stations, the combination of keys for the stations having characteristicsdififerent from the keys of other stations; key-actuating devices at the stations, adapted to be adjusted to the individual characteristics of the keys; means for actuating said devices;

electromagnets controlling the movement of the key actuating devices; electromagnets for adj ustingthe key-actuating devices to the individual characteristics of its respective key; and meansfor'energizin g certain of said controlling and adjusting electromagnets concurrentlyysaid key-actuating devices being ineffective-to move a key into operative position, except when ad usted to the individual characteristics ofsuch key."

11. -In an electrical circuit connected with a plurality of 'st'ations, the combination of-cirQ -cuitclosing; keys for the stations having characteristics -difierent fromth'e keys of the stations;

, tions;

otherstation key-actuating-devices' at the I adapted to be adjusted to the indi= vld ual characteristics 051 he keys at such stameans for actuating said devices; electrotnagnets for adj listing-the key-actuating *ing certain of the adjusting and devices to the individualcharacteristics of the keys'at such stations; means for energizcontrolling imagn'ets concurrently; "and means for readjusting the key-actuating-devices to an'in- ;.operative position, except when adjusted to the individualcharacteristics of such key.

12.- In an electrical circuit connected'with fa plurality of stations, the combination of circuit-closing keys for thestations, each having characteristics dilferent from .the keys of other stations; key-actuating devices adapted to be adjustedto the individual characteristics or the keys; means for actuating said devices; electromagnets controlling-the move- 3 ments of said devices; electroinag'nets for ad- "justing said devices to the individual chareffective to move a tion, unless adjusted acteristics ofthe keys; said devices being in- 4 key into operative posito the individual'char- 'acteristic's thereof; together'with means for communicating motion from said devices to restore the keys to their initial position.

' '13. In an electrical circuit connected with a plurality of'stations', the combination of circuit-closin g keys for the stations, each having characteristicsdiiferent from the keys of the other stations; a carrier at each station, provided with a series of key-actuating elements; means for actuating the carrier; electromagnetic ,means' for controlling the movement thereof; electromagnetic means for adjusting the key-actuating elements of the carrier to register with the individual characteristics of their respective keys; and key-supporting devices adapted to release the respective keys and permit them to return to their initial po- 7 sition, when the adjusting actuating elements ofthe carrier fail to register with the individual characteristics of such keys. '55

I 14. In an electrical circuit connected with a plurality of stations; the combination of circuit-closing keys for the ations, each having characteristics difierentfrom the keys of the other stations; a carrier at ea'chstation, provided with a series of key-actuating elements;

means for actuating said carrier electromagnetic' means for adjusting the key-actuating elements of the carriers to register with the v individual characteristics of their I'QSPQCIDH'G keys.v I

15. In an electrical circuit'connected w1th a plurality of stations; the combination of circuit-closing keys for the.stations, each having characteristics different from the keys of the other stations; a carrier at'e'achstatiom'provided with a series of keyactuatingeleinents';

'means for actuating'said'carrierfandel ec tromagneticme'ans for controlling ment of the carrier. H V

16. In an electrical circuit connected with aplurality of stations; the communistatte: I cuit-closing keys for the s tations,-each having characteristics dilferent from the-keys of'th'e other stations; acarrier at eachstation',pro-

v-ided'with'a series of key-actuating elements means for actuating said carrier ';"electromagnetic' means'for controlling the movement-of the carrier;

17. In an electricalcircuit con ecte'dfwith a plurality of stations; thecombinationof'cir-j 'cuit-closing' keys for the stations, "each having characteristics different from the keys-of the other stations; a carrienateach stationjp'lrovided with aseries of key-actuating element's means for actuating said-carrier; electromag net-ic means for adj ustingthe key-actuating and means for restoring tlie 'keys .to their initial positions.

.clements oi" the carriers to-regis'ter with the individual characteristics of their respective 'elements of the carriers to register with the individual characteristics of their respective keys; and means for restoring the keys to their initial positions.

19. In an electrical circuit connected with a plurality of stations; the combination of circuit-closing keys for the stations, each having characteristics dilferent from the keys of the other stations; a carrier at each station, provided with a series of key-actuating elements; means for actuating the carrier; a plurality of. sliding'connections mounted on said carrier; stops for limiting the movement of said connections, arranged to allow each such con- ICC nection a different movement from the other;

holding devices for saidcarrier; and sliding connections, and electromagnetic means for releasing said holding devices interchangeably, whereby the movement of the carrier is controlled. v

20.; In an electrical circuit connected with aplurality of stations; the combination of circuit-closing keys for the stations, each having characteristics different from the keys of the other stations; a carrier at each station, pro-- vided with aseries'of key-actuatin g elements means for actuating the carrier; a plurality of sliding connections monntedon said care rier; stops for limiting the movement of said connections, arranged to allow each such connection a dilferent movement from the other; holding devices for said carrier; and sliding connections, andelectromagnetic means for releasing said holdin; devices interchangeably, whereby the movement of the carrier is controlled; electromagnets arranged to be switched into and out of circuit with a source of electrical current by said sliding connections; and levers adapted to be actuated by such magnets to adjust the key-actuating elements With reference to the individual characteristics of the keys.

21. In an electrical circuit connected with a plurality of stations; the combination of circuit-closing keys for the statious, each having characteristics difierent, from the keys of the other stations; a rotary disk-carrier at each station; means for driving said carrier; a series of key-actuating elements adjusta'bly connected with said carrier; electromagnetic means for controlling the movement of said carrier; electromagnetic means for adjusting said key-actuating devices into registry with a key; and means for securing a concurrent action of the carriercontrolling and the adjusting magnets.

22. In a circuit-closing mechanism forrelec:

trical stations, a carrier at each station; dif- 3o trolled independently of the duration of the transmitted impulses. y I

23. In a circuit-closing mechanism for electrical stations, a series of ditferentiating'elements mounted in a suitable support at each station; and means, controlled by electrical impulses of variable character, for adjusting the diEerentiat-ing elements of any one series to the desired operative; or inoperative, position, whereby such'adju'stment may be offected, independently of the duration of the transmitted impulses.

In testimony 'whereot \ve a'flix our signatures in the presence of two witnesses.

WILLIAM s. BURNETTL WILLIAM HERBERT GOODALL.

Witnesses:

J AS. B. ERWIN, LEVERETT C. WHEELER; 

